FORAMJNIFER A— HERON- ALLEN AND EARLAND. 165 



371. Lagena pidchella, Brady. 



Lagena ptdchella, Brady, 1866, Rep. Brit. Ass. (1867), p. 70. 



Brady, ]87(), FTR. p. 294, pi. .xii, fig. 1, a, h. 



Balkwill and Wright, 1885, DIS. p. 342, pi. xii, fig. 19. 



Stations 2. 3. 6. 



Like L. clathmta, from which it differs by its branching costae, this form 

 is confined to the N.Z. area, where it is rare. The best specimens at Station 0. 



372. Lagena pulchella, var. hexagona, Heron-Allen and Earland. 



Lagena pulchella, var. hexagona, Heron-Allen and Earland, 1916, FWS. p. 2.54, pi. xii, fig. 27. 



Station 6. 



At this Station several specimens of this very ornate varietv. 



373. Lagena clathrata, Brady. 



Lagena clathrata, Brady, 1884, FC. p. 485, pi. Ix, fig. 4. 



Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 668. 



Stations 2, 3, 5-8, 10-12, 3G. 



This is one of the most characteristic N.Z. Foraminifera, and, with the 

 exception of a single specimen, all our records are confined to that area. It is, 

 moreover, very variable, the lines of variation developing in the direction of the 

 suppression of the keel, and the number of costae on the faces of the test. 

 Individuals with weak development of the keel have as a ];ule an excessive 

 number of costae on the face of the shell, while those with a strongly-developed 

 median carina are usually furnished with a very limited number of strong costae. 

 Specimens of this type have lieen noticed w4th as few as three prominent costae, 

 and the number rarely exceeds seven when the costae are strong. At Station 5 

 a specimen with a long produced neck, the only one found in N.Z., and closely 

 resembling the only specimen recorded outside the N.Z. area, which was fron^ 

 Station 36 (2,210 fms.), the surface of wdiich is very finely costate. The best 

 N.Z. Stations are Stations 6, 7, and 10. 



374. Lagena clypeato-marginata, var. crassa, Sidebottom. 



Lagena vulgaris, var. clypeato-marginata, Ryraer .Tones, 1872, LJS. p. 58, pi. xix, fig. 37. 

 „ clyjK.ato-maryinata, Sidebottom, 1912, etc., LSP. 1912, p. 425, pi. xxi, fig. 6. 



Stations 10, 11. 



Moderately abundant at both Stations. Many of the specimens agree entirely 

 with Sidebottom's description and figure, in others the markings, which he says 

 " are sometimes arranged as lines," have developed into feeble costae. The species 

 is referable to the L. auriculata group, some of the specimens showing well- 

 developed loops at the basal edges. 



